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v3.23.1

Intangible assets and goodwill - Definite-lived Intangibles (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Definite-lived intangible assets |  |  |
Milestone Payable | $ 32,500 |  |
Accrued royalties | 32,694 |  | $ 40,546
Definite-lived intangibles |  |  |
Amortization | (39,415) | $ (23,473) |
Finite-Lived Intangible Assets, Net | $ 232,639 |  |
Weighted Average |  |  |
Definite-lived intangible assets |  |  |
Remaining amortization period | 5 years |  |
Emflaza asset acquisition |  |  |
Definite-lived intangible assets |  |  |
Milestone obligation payments recorded | $ 17,500 | 62,100 |
Emflaza asset acquisition | Accounts payable and accrued expenses |  |  |
Definite-lived intangible assets |  |  |
Milestone Payable | 17,500 |  |
Emflaza asset acquisition | Sales Milestones |  |  |
Definite-lived intangible assets |  |  |
Milestone obligation payments recorded |  | 50,000 |
Akcea | Waylivra |  |  |
Definite-lived intangible assets |  |  |
Royalty payments | 0 |  |
Akcea | Tegsedi |  |  |
Definite-lived intangible assets |  |  |
Royalty payments | 2,000 | $ 400 |
Akcea | Tegsedi | Accounts payable and accrued expenses |  |  |
Definite-lived intangible assets |  |  |
Accrued royalties | 2,000 |  |
Definite-lived intangible assets |  |  |
Definite-lived intangibles |  |  |
Beginning balance - Definite-lived assets, Gross | 526,228 |  |
Additions | 19,516 |  |
Foreign Currency Translation | 301 |  |
Ending balance - Definite-lived assets, Gross | 546,045 |  |
Beginning balance - Accumulated amortization | (273,903) |  |
Amortization | (39,415) |  |
Foreign Currency Translation - Accumulated amortization | (88) |  |
Ending balance - Accumulated amortization | (313,406) |  |
Finite-Lived Intangible Assets, Net | 232,639 |  |
Definite-lived intangible assets | Emflaza |  |  |
Definite-lived intangibles |  |  |
Beginning balance - Definite-lived assets, Gross | 420,253 |  |
Additions | 17,515 |  |
Ending balance - Definite-lived assets, Gross | 437,768 |  |
Beginning balance - Accumulated amortization | (266,023) |  |
Amortization | (36,996) |  |
Ending balance - Accumulated amortization | (303,019) |  |
Definite-lived intangible assets | Waylivra |  |  |
Definite-lived intangibles |  |  |
Beginning balance - Definite-lived assets, Gross | 9,316 |  |
Foreign Currency Translation | 170 |  |
Ending balance - Definite-lived assets, Gross | 9,486 |  |
Beginning balance - Accumulated amortization | (2,751) |  |
Amortization | (261) |  |
Foreign Currency Translation - Accumulated amortization | (52) |  |
Ending balance - Accumulated amortization | (3,064) |  |
Definite-lived intangible assets | Tegsedi |  |  |
Definite-lived intangibles |  |  |
Beginning balance - Definite-lived assets, Gross | 7,109 |  |
Additions | 2,001 |  |
Foreign Currency Translation | 131 |  |
Ending balance - Definite-lived assets, Gross | 9,241 |  |
Beginning balance - Accumulated amortization | (1,709) |  |
Amortization | (292) |  |
Foreign Currency Translation - Accumulated amortization | (36) |  |
Ending balance - Accumulated amortization | (2,037) |  |
Definite-lived intangible assets | Upstaza |  |  |
Definite-lived intangibles |  |  |
Beginning balance - Definite-lived assets, Gross | 89,550 |  |
Ending balance - Definite-lived assets, Gross | 89,550 |  |
Beginning balance - Accumulated amortization | (3,420) |  |
Amortization | (1,866) |  |
Ending balance - Accumulated amortization | $ (5,286) |  |

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